Population dynamics and extracellular enzymes activity of mesophilic and thermophilic bacteria isolated from semi-arid soil of Northeastern Brazil

Studies on population dynamics and community structure for mammals from the semi-arid Caatinga biome are very scarce. I surveyed non-volant mammals in four sites in the Caatinga of Northeastern Brazil. Herein, 24 species belonging to eight orders are recorded. A total of 165 individuals of five species of small mammals were captured in a 4-year capture-recapture study. Capture success and relative richness were low and not correlated with precipitation and temperature. The present study contributes to the knowledge of species biology and ecology in sites geographically close to priority areas for conservation in this biome.

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Prevalence and isolation of Toxoplasma gondii in goats slaughtered for human consumption in the semi-arid of northeastern Brazil

Parasitology International ◽

10.1016/j.parint.2021.102457 ◽

2022 ◽

Vol 86 ◽

pp. 102457

Author(s):

Samira Pereira Batista ◽

Samara dos Santos Silva ◽

Wlysse Ferreira Sarmento ◽

Rômulo Fylipe Silva ◽

Larissa do Nascimento Sousa ◽

...

Keyword(s):

Toxoplasma Gondii ◽

Northeastern Brazil ◽

Human Consumption ◽

Semi Arid

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Ethnopharmacological study of Stryphnodendron rotundifolium in two communities in the semi-arid region of northeastern Brazil

Revista Brasileira de Farmacognosia ◽

10.1016/j.bjp.2014.03.003 ◽

2014 ◽

Vol 24 (2) ◽

pp. 124-132 ◽

Cited By ~ 9

Author(s):

Dayanne Rakelly de Oliveira ◽

Washington Soares Ferreira Júnior ◽

Vanessa de Carvalho Nilo Bitu ◽

Patricia Gonçalves Pinheiro ◽

Cicero Diego Almino Menezes ◽

...

Keyword(s):

Arid Region ◽

Northeastern Brazil ◽

Semi Arid Region ◽

Semi Arid

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The influence of microhabitat on the population dynamics of four herbaceous species in a semiarid area of northeastern Brazil

Brazilian Journal of Biology ◽

10.1590/1519-6984.10014 ◽

2016 ◽

Vol 76 (1) ◽

pp. 45-54 ◽

Cited By ~ 2

Author(s):

K. A. Silva ◽

J. M. F. F. Santos ◽

J. R. Andrade ◽

E. N. Lima ◽

U. P. Albuquerque ◽

...

Keyword(s):

Population Dynamics ◽

Population Size ◽

Mortality Rates ◽

Dry Forest ◽

Northeastern Brazil ◽

Annual Rainfall ◽

Herbaceous Species ◽

Forest Fragment ◽

Experimental Station ◽

Over Time

Abstract Variation in annual rainfall is considered the most important factor influencing population dynamics in dry environments. However, different factors may control population dynamics in different microhabitats. This study recognizes that microhabitat variation may attenuate the influence of climatic seasonality on the population dynamics of herbaceous species in dry forest (Caatinga) areas of Brazil. We evaluated the influence of three microhabitats (flat, rocky and riparian) on the population dynamics of four herbaceous species (Delilia biflora, Commelina obliqua, Phaseolus peduncularis and Euphorbia heterophylla) in a Caatinga (dry forest) fragment at the Experimental Station of the Agronomic Research Institute of Pernambuco in Brazil, over a period of three years. D. biflora, C. obliqua and P. peduncularis were found in all microhabitats, but they were present at low densities in the riparian microhabitat. There was no record of E. heterophylla in the riparian microhabitat. Population size, mortality rates and natality rates varied over time in each microhabitat. This study indicates that different establishment conditions influenced the population size and occurrence of the four species, and it confirms that microhabitat can attenuate the effect of drought stress on mortality during the dry season, but the strength of this attenuator role may vary with time and species.

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Prevalence and intensity of pentastomid infection in two species of snakes from northeastern Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842007000400025 ◽

2007 ◽

Vol 67 (4) ◽

pp. 759-763 ◽

Cited By ~ 9

Author(s):

WO Almeida ◽

A Vasconcellos ◽

SG Lopes ◽

EMX Freire

Keyword(s):

Arid Region ◽

Infection Intensity ◽

W State ◽

Northeastern Brazil ◽

Infection Rates ◽

New Host ◽

Host Infection ◽

Semi Arid Region ◽

New Host Records ◽

Semi Arid

This study aimed to evaluate the infection rates of snakes by pentastomids in the semi-arid region of Brazil. Fifteen snakes (four Micrurus ibiboboca (Merrem, 1820) and eleven Philodryas nattereri Steindachner, 1870) were collected between January and April of 2005, in the municipality of Crato (07° 14' S and 39° 24' W), State of Ceará, Brazil. Laboratorial analysis of the respiratory tracts of the sampled snakes indicated differences in host infection rates: four individuals of P. nattereri (36.4%) were infected by Cephalobaena tetrapoda Heymons, 1922 (mean infection intensity 1.5 ± 0.28, 1-2) and three specimens (27.3%) by Raillietiella furcocerca (Diesing, 1863) (2.3 ± 1.32, 1-5). Only one individual of M. ibiboboca (25%) was infected by a non-identified species of Raillietiella sp. These are the first data on pentastomid infection in snakes in Northeastern Brazil and both snake species comprise new host records for the pentastomids. The results also indicate that the generalist parasites C. tetrapoda and R. furcocerca share their definitive hosts.

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THERMAL CHARACTERIZATION OF THE FAVELONE DERIVATIVES (CNIDOSCOLUS QUERCIFOLIUS) BY THERMOGRAVIMETRY AND DIFFERENTIAL SCANNING CALORIMETRY

Periódico Tchê Química ◽

10.52571/ptq.v3.n05.2006.janeiro/1_pgs_8_20.pdf ◽

2006 ◽

Vol 05 (3) ◽

pp. 8-20

Author(s):

José Carlos Oliveira SANTOS ◽

Lionete Dantas NUNES ◽

Sylvia Berenice NÓBREGA ◽

Dantas José Pires PUZINSKI ◽

Antonio Gouveia SOUZA

Keyword(s):

Differential Scanning Calorimetry ◽

Arid Region ◽

Agricultural Practices ◽

Thermal Characterization ◽

Northeastern Brazil ◽

Scanning Calorimetry ◽

Semi Arid Region ◽

Derivatives Of ◽

Semi Arid

A thermal analysis has been applied to characterization of food and food products. Taking into account the problems of desertification and agricultural practices able to provide income to the population at the semi-arid region of Northeastern Brazil, this work presents the results of the chemical, thermal and kinetic characterization by thermogravimetry and differential scanning calorimetry of the seed derivatives of favelone (cnidoscolus quercifolius), aiming at the application of these materials as an alternative of food source for animals and for the human population at this brazilian region.

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Prevalence of paralytic shellfish poison-producing Planktothrix agardhii and Cylindrospermopsis raciborskii in a Brazilian semi-arid reservoir

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x5014 ◽

2015 ◽

Vol 27 (2) ◽

pp. 238-246 ◽

Cited By ~ 4

Author(s):

Ismael Keslley Carloto Lopes ◽

Mario Ubirajara Gonçalves Barros ◽

Carlos João Pestana ◽

José Capelo Neto

Keyword(s):

Drinking Water ◽

Water Supply ◽

Drinking Water Supply ◽

Northeastern Brazil ◽

Cylindrospermopsis Raciborskii ◽

Planktothrix Agardhii ◽

Paralytic Shellfish Poison ◽

Paralytic Shellfish ◽

Three Samples ◽

Semi Arid

Aim: The present study aimed to investigate the composition and toxicity of the phytoplankton in Sítios Novos reservoir, used mainly as drinking water supply for approximately 30,000 people.MethodsSamples were collected between January 2010 and June 2011.ResultsDuring this period 19 taxa of cyanobacteria and 22 of algae were identified. Out of 45 samples collected, algae accounted for no more than 10% of the quantified organisms in 44 samples. Cyanobacteria accounted for 100% of the organisms quantified in three samples and for 99% in other 29 samples. Among the cyanobacteria group, Planktothrix agardhii (Gomont) Anagnostidis & Komárek and Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subbaraju prevailed and both strains were isolated and identified as paralytic shellfish poison (PSP) producers. C. raciborskii strain has shown to produce SXT and dcSXT while P. agardhii strain has shown to produce dcGTX2 or 3.ConclusionsTo the author’s knowledge, this is the first report of PSP-producer cyanobacteria species isolated in Northeastern Brazil and the first reported of a P. agardhii synthesizing dcGTX2/3.

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Chapada Do Araripe: A Highland Oasis Incrusted into the Semi-arid Region of Northeastern Brazil

World Geomorphological Landscapes - Landscapes and Landforms of Brazil ◽

10.1007/978-94-017-8023-0_21 ◽

2015 ◽

pp. 231-242 ◽

Cited By ~ 2

Author(s):

Norberto Morales ◽

Mario Luis Assine

Keyword(s):

Arid Region ◽

Northeastern Brazil ◽

Semi Arid Region ◽

Semi Arid ◽

Chapada Do Araripe

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Aspergillus fuscicans (Aspergillaceae, Eurotiales), a new species in section Usti from Argentinean semi-arid soil

Phytotaxa ◽

10.11646/phytotaxa.343.1.6 ◽

2018 ◽

Vol 343 (1) ◽

pp. 67 ◽

Cited By ~ 2

Author(s):

STELLA M. ROMERO ◽

RICARDO M. COMERIO ◽

VIVIANA A. BARRERA ◽

ANDREA I. ROMERO

Keyword(s):

New Species ◽

Sequence Analysis ◽

Sequence Data ◽

Arid Soil ◽

Physiological Studies ◽

A New Species ◽

Semi Arid ◽

Aspergillus Section ◽

Β Tubulin

Aspergillus fuscicans, a new species within Aspergillus section Usti from Argentinean semi-arid soil is introduced. Molecular, morphological and physiological studies were conducted, based on sequence analysis of partial β-tubulin and calmodulin sequence data. Aspergillus fuscicans formed a distinct, well-defined clade related to A. calidoustus and A. pseudodeflectus. In addition, A. fuscicans was able to grow and sporulate at 37 ºC, and had a negative Ehrlich reaction. Morphological and physiological features could be used to differentiate the new species from its phylogenetically related taxa.

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